Improving stability of the gentry

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maninblack646
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Location: Thunder Bay Ontario Canada

Improving stability of the gentry

Postby maninblack646 » Sun Mar 30, 2008 5:15 pm

Hi I built the gentry, finnishing it last fall I got it in for a few rides before winter. My problem was with handling and tracking. It wanted to slip from side to side at the tramsom at high speeds.

I'm thinking about adding racing fins to the hull or two short keels on either side of the main keel.

Can some one please give me some advice on what I should do? if I go with racing fins how many and were should I place them?

thanks,

jamie

Nova SS
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Postby Nova SS » Mon Mar 31, 2008 10:02 am

could it be chine walking or is it doing a fish tailing kind of motion?

Scott
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Postby Scott » Mon Mar 31, 2008 3:36 pm

Is it rocking from side to side or slapping the water from bow to stern?
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Nova SS
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Postby Nova SS » Tue Apr 01, 2008 4:57 pm

Ok, Jamie sent me an email saying that the boat has a fish tailing type of motion at the transom at high speeds. SO guys what causes this and how do we remedy it?

Scott
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Postby Scott » Tue Apr 01, 2008 6:45 pm

Is there a fin..?
Thun.der.bolt
ˈTHəndərˌbōlt

A flash of lightning with a simultaneous crash of thunder.

An ignition system of early Mercury outboards that not only is a nightmare to diagnose but also improves a marine mechanics competency.

upspirate

Postby upspirate » Tue Apr 01, 2008 7:40 pm

Is all the slack taken up out of the steering???If cable,it may have stretched some

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maninblack646
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Postby maninblack646 » Tue Apr 01, 2008 8:00 pm

Hi I have no fins on the hull yet, also steeering is not a issue its very tight

jamie

Nova SS
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Postby Nova SS » Wed Apr 02, 2008 5:08 am

I posted this question on the vdrive site as well to see if we can get some more insight into it and so far the only response asks if the rudder might be loose.

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Bill Edmundson
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Postby Bill Edmundson » Wed Apr 02, 2008 5:24 pm

Weight may be a little forward. You mignt try a coulple of sand bags as far aft as you can get them and see if there is any change. At the very least it will be a cheap try.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

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maninblack646
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Location: Thunder Bay Ontario Canada

Postby maninblack646 » Wed Apr 02, 2008 6:50 pm

Interesting thought of having to much weight forward.

Since the seat is at the back of the boat I found no difference with just me driving or with an extra 300 pounds with two passengers beside me.

I'm still of the opinion that I need racing fins and would love to hear from any one who has built the Genrty if they had this same problem.

jamie
Have built the Sherwood Queen, Gentry, 16'cedar strip Whitehall, 16'cedar strip canoe(red bird), 21' Fantail, 15' cedar strip ( prospector canoe )

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Bill Edmundson
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Postby Bill Edmundson » Wed Apr 02, 2008 7:45 pm

Jamie,

You didn't mention the other weight /passeger back there with no affect. I would love to see a picture of the attitude of the boat underway. I might think mini skegs aft. But, if you're stern down it could get worse.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
Tahoe 19 Build

Trackhappy
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Location: Sunshine Coast, Queensland, Australia. Building Gentry.

Re: Improving stability of the gentry

Postby Trackhappy » Mon Feb 22, 2010 10:29 pm

I am about to embark on a Gentry. Are there any updates or comments on this issue????
By the time I have built a boat, I'll be ready to build a boat....

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kens
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Re: Improving stability of the gentry

Postby kens » Tue Feb 23, 2010 5:18 pm

What kind of motion are you relating to? :?
A list from one side or the other?
A fishtailing effect?
Chine walking?
Oak is over rated, everything about it takes extra time; then it warps, splits or checks !!! :roll:

Trackhappy
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Joined: Wed Feb 17, 2010 5:42 pm
Location: Sunshine Coast, Queensland, Australia. Building Gentry.

Re: Improving stability of the gentry

Postby Trackhappy » Sun Oct 10, 2010 9:01 pm

I'd still like to hear more about this issue if anybody has any information. Has anybody else built a Gentry and actually tuned it? :)
By the time I have built a boat, I'll be ready to build a boat....

66cobra
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Re: Improving stability of the gentry

Postby 66cobra » Fri Feb 14, 2014 5:04 pm

What ever happened to this thread? I have watched several utube's of Gentry's while under power and it appears that the hull planes well but doesn't ride high. Being new to this group, I wonder if the motor were farther back would the weight distribution change allowing the nose to come up ....
She would be faster....
Jon


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